Home / 18,286.12-25,234.80-9,902.60

Finding the Fourth Proportional to 18,286.12, 25,234.80 and 9,902.60

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Solution

The fourth proportional to 18,286.12, 25,234.80 and 9,902.60 is: 13,665.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.12 : 25,234.80 = 9,902.60 : x
  2. Step 2: Convert to fraction form
    18,286.12/25,234.80 = 9,902.60/x
  3. Step 3: Cross multiply
    18,286.12x = 25,234.80 × 9,902.60
  4. Step 4: Simplify right side
    18,286.12x = 249,890,130.48
  5. Step 5: Solve for x
    x = 249,890,130.48/18,286.12
  6. Step 6: Final answer
    x = 13,665.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.